jit trace comparisons snuck into torchscript part of validate.py, fixed

Author: rwightman

validate.py

@@ -181,7 +181,7 @@ def validate(args):
 
     if args.torchscript:
         torch.jit.optimized_execution(True)
-        model = torch.jit.trace(model, example_inputs=torch.randn((args.batch_size,) + data_config['input_size']))
+        model = torch.jit.script(model)
     if args.aot_autograd:
         assert has_functorch, "functorch is needed for --aot-autograd"
         model = memory_efficient_fusion(model)